- Remove timeouts from msleep()'s. Those should always be woken up.
- Move wakeup() under the lock to not call on possibly freed pointer.
- Remove some dead code.
MFC after: 2 weeks
The current implementations never correctly return TRUE. In all cases,
when they currently return TRUE, they should have returned FALSE. And,
in some cases, when they currently return FALSE, they should have
returned TRUE. Except for its effects on performance, specifically,
additional page faults and pointless calls to pmap_enter_quick() that
abort, this error is harmless. That is why it has gone unnoticed.
Add a comment to the amd64, arm64, and riscv implementations
describing how their return values are computed.
Reviewed by: kib, markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D33659
struct itimers is allocated with M_ZERO, setting all members to NULL
is tautological.
Reviewed by: imp, markj, mav
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D33670
The Qualcomm TCSR is some top level glue between multiple IP blocks,
both for doing configuration of said IP blocks, some IPC between
them (mostly between multiple execution environments - eg trustzone
and non-TZ), and interrupt status bits for them.
However, for the IPQ4018/IPQ4019, it only is used as a small subset
of IP block configuration. As for what it actually gets used as
for other Qualcomm chipsets? Well, that'll have to wait.
It's a bit of a mess in linux and openwrt. See, every different
SoC support branch ends up with some different TCSR code for it.
So instead, I'm going to land a single TCSR driver that I'm going
to use for the IPQ4018/IPQ4019. When I add the next chipset, I'll
figure out how to organise things so there's a single TCSR driver
that works for multiple platforms.
The Qualcomm Universal Peripherals Engine (QUP) is a unified SPI and I2C
peripheral that ships with a variety of Qualcomm SoCs.
It supports three transfer modes - single PIO, block PIO and DMA.
This driver only supports the single PIO mode, which is enough to
bootstrap the rest of the SPI NAND/NOR support and means I can do
things like read the Wifi calibration data from NOR. It has some
hardware support code for the other transfer modes as well as
some support for split transfers (ie, transfers with no read or
write phase), but I haven't yet implemented those.
This driver is based on four sources - the linux driver, the u-boot
driver, some initial work done for APQ8064 by mmel@, and the APQ8064
Technical Reference Manual which is surprisingly free and open to
read. The linux and u-boot drivers approach a variety of things
completely differently, from how PIO is done, the hardware support
for re-ordering bytes in a transfer word and how the CS lines
are used.
Tested:
* IPQ4018, SPI to NAND/NOR flash, PIO only
This patch makes the handling of the SCTP_MAXSEG socket option
compliant with RFC 6458 (SCTP socket API) and fixes an issue
found by syzkaller.
Reported by: syzbot+a2791b89ab99121e3333@syzkaller.appspotmail.com
MFC after: 3 days
Now that the clock drivers are in the tree, the cpufreq driver will
"just work".
Tested:
* IPQ4018, testing performance of dd from /dev/zero->/dev/null at
each frequency step.
Summary: I've tested this with cpufreq_dt, SPI and USB. They all seem to work fine.
Test Plan: * IPQ4018, boot
Subscribers: imp, andrew
Differential Revision: https://reviews.freebsd.org/D33665
These clock nodes are used by the IPQ4018/IPQ4019 and derivatives.
They're also used by other 32 and 64 bit qualcomm parts; so it's
best to put these nodes here in a single qcom_clk driver and add
to it as we grow new Qualcomm SoC support.
Tested:
* IPQ4018, boot
Differential Revision: https://reviews.freebsd.org/D33665
In certain situations we saw a memory modified after free. This was
tracked down to a pointer not NULLed after free and used in a different
code path. It is unclear how the race happens pending further
investigation but setting the pointer to NULL after free and adding a
check in the 2nd code path handling the case gracefully helps for now.
While here improve another debug messge in sta handling.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Cherry-pick f973795a8d19cbf3d03807704eb7c6ff65788d5a (Fix a double free
in iwl_txq_dyn_alloc_dma), db66abeea3aefed481391ecc564fb7b7fb31d742
(synchronize with FW after multicast commands),
d5d8ee526d1401173ad1261c3b6388a4f947e0a3 (remove session protection
upon station removal), and 8e967c137df3b236d2075f9538cb888129425d1a
(avoid clearing a just saved session protection id).
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Add and hook up man pages for iwlwifi and iwlwififw and install a copy
of the firmware license to /usr/share/docs/legal so it will always be
shipped with the installed system.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Turn off broadcast filtering in iwlwifi for now as it gives me
or rather the firmware headaches.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
The 802.11 compat code is split off linuxkpi.ko into linuxkpi_wlan.ko
in case it is built as a module. Depend on that.
While here adjust our module to a longer version to avoid conflicts.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
We do not generally protect the Makefiles like this.
Remove the details and go with project style.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
X-MFC with: bfcc09ddd4
X-MFC with: f4c129f5fb
Add 802.11 compat code for mac80211 and to a minimal degree cfg80211.
This allows us to compile and use basic functionality of wireless
drivers such as iwlwifi.
This is a constant work in progress but having it in the tree will
allow others to test and more easy to track changes and avoid having
snapshots no longer applying to branches.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Import a netdevice update complementing the last remaining bits of
the old ifnet derived implementation. Along add a (for now) task
based NAPI implementation.
This is the minimal set of chnages which are needed for the initial
support of wireless drivers. The NAPI implementation has an option to
still switch to "direct dispatch" as it had been used by these drivers
before not relying on a deferred context along with some printf tracing.
This has been helpful in the last weeks for debugging and will be
cleaned once we have had broader testing and are sure this is fine as-is.
Should we need a more time-sensitive or load-sensitive response
in the future we can always switch to something more sophisticated.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
X-Differential Revision: D33075 (abandoned without feedback a while ago)
This is a work-in-progress implementation of sk_buff compat code
used for wireless drivers only currently.
Bring in this version of the code as it has proven to be good enough
to have packets going for a few months.
The current implementation has several drawbacks including the need
for us to copy data between sk_buffs and mbufs.
Do not rely on the internals of this implementation. They are highly
likely to change as we will improve the integration to FreeBSD mbufs.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
FreeBSD only supports Allow/Deny ACEs in NFSv4 ACLs.
As such, it does not make sense to parse Audit/Alarm
ACEs. Modify nfsrv_dissectace() so that it returns
NFSERR_ATTRNOTSUPP if an Audit/Alarm ACE is found in
the ACL being parsed. The code has been #ifdef notnow'd,
since Audit/Alarm ACEs might be supported someday.
This should not have significant impact, since FreeBSD
reports to clients that only Allow/Deny ACEs are
supported and an attempt to set one would have failed
anyhow.
MFC after: 2 weeks
Test ranges of allowed ports for aliasing.
- Explicit default like ipfw(8) is doing
- Regular range
- Exhausting a very small range
- Recovery
Includes a fix of an utility macro, which was not used before.
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D31012
NFSv4.1/4.2 has an alternative to the acl attribute, called
dacl, that includes support for the ACL_ENTRY_INHERITED flag,
called NFSV4ACE_INHERITED in NFSv4.
This patch adds a dacl argument to nfsrv_buildacl(),
nfsrv_dissectacl() and nfsrv_dissectace(), so that they
will handle NFSV4ACE_INHERITED when dacl == true.
Since these functions are always called with dacl == false
for this patch, semantics should not have changed.
A future patch will add support for dacl.
MFC after: 2 weeks
The intent is to provide more entropy than can be provided
by just the 32-bits of the IPv6 address which overlaps with
6to4 tunnels. This is needed to mitigate potential algorithmic
complexity attacks from attackers who can control large
numbers of IPv6 addresses.
Together with: gallatin
Reviewed by: dwmalone, rscheff
Differential revision: https://reviews.freebsd.org/D33254
Now struct prison has two pointers (IPv4 and IPv6) of struct
prison_ip type. Each points into epoch context, address count
and variable size array of addresses. These structures are
freed with network epoch deferred free and are not edited in
place, instead a new structure is allocated and set.
While here, the change also generalizes a lot (but not enough)
of IPv4 and IPv6 processing. E.g. address family agnostic helpers
for kern_jail_set() are provided, that reduce v4-v6 copy-paste.
The fast-path prison_check_ip[46]_locked() is also generalized
into prison_ip_check() that can be executed with network epoch
protection only.
Reviewed by: jamie
Differential revision: https://reviews.freebsd.org/D33339
Summary:
The existing call can only really be used for a node wishing to
configure its parent, but as we don't pass in a pointer to the freq,
we can't set it to what it would be for a DRY_RUN pass.
So for clock nodes that wish to try setting parent frequencies to see
which would be the best for its own target frequency, we really do need
a way to call in and pass in a flag /and/ a pointer to freq so it can be
updated for us as the clock tree is recursed through.
Reviewers: manu
Approved by: manu
Subscribers: imp
Differential Revision: https://reviews.freebsd.org/D33445
Handle specially the boundary==0 case of vm_reserv_reclaim_config,
by turning off boundary adjustment in that case.
Reviewed by: alc
Tested by: pho, madpilot
Throughout net80211 there are multiple ways to log (debugging)
information. Start to clenaup one as I kept hitting it to harmonize
the output. The more we get away from printfs into either wrapper
functions or macros the more likely we can use holistic systematic
tracing in the future.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Add more STATE / DEBUG probes and enhance the output of one in order
to track state changes triggered by "ack" (or not).
This helped to narrow down causes from drivers or the LinuxKPI 802.11
compat framework which kept us in a scan -> auth -> scan loop.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Making use of the debug output was hard given debug lines were run in
parts through vlog (if_printf) and in (multiple) parts through printf(s).
Like some of the functions alreay have, use a local buffer to format
the string and then use a single if_printf; in addition given these
functions are debug-only, add an extra printf in case we find our
buffers still to be too small so we can adjust for the future.
We already found that 128 characters are to short for some log messages.
Bump the buffer sizes collectively to 256 characters which also is
the maximum of if_vlog() so getting longer would need further changes
elsewhere.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
The advanced TCP stacks (bbr, rack) may decide to drop a TCP connection
when they do output on it. The default stack never does this, thus
existing framework expects tcp_output() always to return locked and
valid tcpcb.
Provide KPI extension to satisfy demands of advanced stacks. If the
output method returns negative error code, it means that caller must
call tcp_drop().
In tcp_var() provide three inline methods to call tcp_output():
- tcp_output() is a drop-in replacement for the default stack, so that
default stack can continue using it internally without modifications.
For advanced stacks it would perform tcp_drop() and unlock and report
that with negative error code.
- tcp_output_unlock() handles the negative code and always converts
it to positive and always unlocks.
- tcp_output_nodrop() just calls the method and leaves the responsibility
to drop on the caller.
Sweep over the advanced stacks and use new KPI instead of using HPTS
delayed drop queue for that.
Reviewed by: rrs, tuexen
Differential revision: https://reviews.freebsd.org/D33370
For all functions that are leaves of tcp_input() call
ctf_do_dropwithreset_conn() instead of ctf_do_dropwithreset(), cause
we always got tp and we want it to be dropped.
Reviewed by: rrs, tuexen
Differential revision: https://reviews.freebsd.org/D33368
This function is always called from tcp_do_segment() method, that
can drop tcpcb and return unlocked.
Reviewed by: rrs, tuexen
Differential revision: https://reviews.freebsd.org/D33367
